Datasheet

LT8614
24
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 ANALOG DEVICES, INC. 2013–2019
www.analog.com
09/19
RELATED PARTS
TYPICAL APPLICATIONS
PART NUMBER DESCRIPTION COMMENTS
LT8610 42V, 2.5A, 96% Efficiency, 2.2MHz Synchronous Micropower
Step-Down DC/DC Converter with I
Q
= 2.5µA
V
IN
: 3.4V to 42V, V
OUT(MIN)
= 0.97V, I
Q
= 2.5µA,
I
SD
< 1µA, MSOP-16E Package
LT8610A/LT8610AB 42V, 3.5A, 96% Efficiency, 2.2MHz Synchronous Micropower
Step-Down DC/DC Converter with I
Q
= 2.5µA
V
IN
: 3.4V to 42V, V
OUT(MIN)
= 0.97V, I
Q
= 2.5µA,
I
SD
< 1µA, MSOP-16E Package
LT8611 42V, 2.5A, 96% Efficiency, 2.2MHz Synchronous Micropower
Step-Down DC/DC Converter with I
Q
= 2.5µA and Input/Output
Current Limit/Monitor
V
IN
: 3.4V to 42V, V
OUT(MIN)
= 0.97V, I
Q
= 2.5µA,
I
SD
< 1µA, 3mm × 5mm QFN-24 Package
LT8612 42V, 6A, 96% Efficiency, 2.2MHz Synchronous Micropower
Step-Down DC/DC Converter with I
Q
= 3µA
V
IN
: 3.4V to 42V, V
OUT(MIN)
= 0.97V, I
Q
= 2.5µA,
I
SD
< 1µA, 3mm × 6mm QFN Package
LT3971 38V, 1.2A, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter with I
Q
= 2.8µA
V
IN
: 4.2V to 38V, V
OUT(MIN)
= 1.21V, I
Q
= 2.8µA,
I
SD
< 1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3991 55V, 1.2A, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter with I
Q
= 2.8µA
V
IN
: 4.2V to 55V, V
OUT(MIN)
= 1.21V, I
Q
= 2.8µA,
I
SD
< 1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3970 40V, 350mA, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter with I
Q
= 2.5µA
V
IN
: 4.2V to 40V, V
OUT(MIN)
= 1.21V, I
Q
= 2.5µA,
I
SD
< 1µA, 3mm × 2mm DFN-10 and MSOP-10 Packages
LT3990 62V, 350mA, 2.2MHz High Efficiency MicroPower Step-Down DC/DC
Converter with I
Q
= 2.5µA
V
IN
: 4.2V to 62V, V
OUT(MIN)
= 1.21V, I
Q
= 2.5µA,
I
SD
< 1µA, 3mm × 3mm DFN-10 and MSOP-6E Packages
12V, 4A Step-Down Converter
2MHz 1.8V, 4A Step-Down Converter
V
IN2
V
IN1
EN/UV
PG
LT8614
8614 TA04
BST
SYNC/MODE SW
TR/SS BIAS
INTV
CC
FB
RT GND
0.1µF
4.7pF
47µF
1210
X5R/X7R
1M
V
OUT
12V
4A
1µF
0603
1µF
0603
4.7µF
V
IN
12.8V TO 42V
10nF
41.2k
1µF
8.2µH
88.7k
GND2GND1
f
SW
= 1MHz
L: IHLP2525CZ-01
V
IN2
V
IN1
EN/UV
PG
LT8614
8614 TA07
BST
SYNC/MODE SW
TR/SS BIAS
INTV
CC
FB
RT GND
0.1µF
EXTERNAL
SOURCE >3.1V
OR GND
100µF
1210
X5R/X7R
10pF
866k
V
OUT
1.8V
4A
1µF
0603
1µF
0603
4.7µF
V
IN
3.4V TO 22V
(42V TRANSIENT)
10nF
18.2k
1µF
1µH
1M
GND2GND1
f
SW
= 2MHz
L: IHLP2020CZ-01
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